{
  "manageEntity": {
    "action": "Save",
    "entityId": "2073308255",
    "entityType": "Track",
    "nonce": "0x2c51f1fc18b36b0d6063e27ac73e438fd191bf5bfb58346a4781cfe63c7f3858",
    "signature": "0x875045df8daa76660e93b002f95fb38b9b2b0e04bdbfcc200058c93404395a9547451e200836627d176bf1c4e8af22fa8dc32f389817b2892478a58ed8f6da5f1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}