{
  "manageEntity": {
    "action": "Save",
    "entityId": "689703516",
    "entityType": "Track",
    "nonce": "0x46082c710b77b556526c41f16644fbd7d6aab5640df0eff7607f156b3111f57d",
    "signature": "0x62d365dcac58bd831cf63fee273002a8222693cff82e96047e2a88ff350f32c833912c728a9416fbc988093f5f5a581bf2f4ec698921ae760b465714dc592dc91b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}