{
  "manageEntity": {
    "action": "Save",
    "entityId": "1960113569",
    "entityType": "Track",
    "nonce": "0xa727fa6c717dc30a263808ef187f38e227dc3dee6c4ab499e0f1a04ff723352b",
    "signature": "0x0de613a0834f31dad353ceed0c0f8315cb267d293fb81a82f04fd5bcc4ea073b1b5df46375e0ecde66f6bd444194dbc1e34595203b68ff71c74451e7e92e1f171b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}