{
  "manageEntity": {
    "action": "Save",
    "entityId": "2010855202",
    "entityType": "Track",
    "nonce": "0x69879459622fb8d38ebc1c7762b90a3b9f58442b0e7edc897fd9ccea11663e38",
    "signature": "0x15b22ff3073759b7fa19451ddfa5e6720ad7b341c8c598f0fa9dfa287ea7d9e2760cecf47ae756702ff0d2672013304b325606236b88907d36f449da5c846b9b1c",
    "signer": "0x4a26E1fdd6FdeE62e6A343d231CF3700Bf1e26bb",
    "userId": "55875"
  }
}