[
    {
        "name": "trackable_id",
        "dbType": "unsignedBigInteger",
        "fillable": true,
        "primary": false,
        "inForm": false,
        "inIndex": false
    },
    {
        "name": "trackable_type",
        "dbType": "string",
        "fillable": true,
        "primary": false,
        "inForm": false,
        "inIndex": false
    },
    {
        "name": "user_id",
        "dbType": "unsignedBigInteger:foreign,users,id",
        "fillable": true,
        "primary": false,
        "inForm": false,
        "inIndex": false,
        "relation": "1t1,User,head_id,id"
    },
    {
        "name": "time_start",
        "dbType": "datetime",
        "fillable": true,
        "primary": false,
        "inForm": false,
        "inIndex": false
    },
    {
        "name": "time_end",
        "dbType": "datetime",
        "fillable": true,
        "primary": false,
        "inForm": false,
        "inIndex": false
    }
]