{
  "manageEntity": {
    "action": "Save",
    "entityId": "1081374489",
    "entityType": "Track",
    "nonce": "0x6811938c230238ec785f045449ebd3f1959766b3185148f810f78a9b908c9449",
    "signature": "0x8ccbd5ee420a40e22ec4aeff1834721153236cb38f3fa4801d86390182293af24e917a877eaf182f4f2e07ce8e2e903b4c149d4375252284cabff0b6e4534fa51b",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}