{
  "manageEntity": {
    "action": "Save",
    "entityId": "2116689570",
    "entityType": "Track",
    "nonce": "0xe4a833eb04f54c38f4c1944f1d3f86375055a02cd02cc8218a24094566e90e62",
    "signature": "0xa70dab201430cddfa259b6f63ae1190bd0ae28072c371b49c4afa199cf7dd9dd62afb993d4e6e2aaf57ff4be08a5d12cf469467121a9977e3afea5a5b446c70e1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}