{
  "manageEntity": {
    "action": "Save",
    "entityId": "1116823",
    "entityType": "Track",
    "nonce": "0x53b3aae5bad49fa9f831fffbd60d4d00cc72317fe07eda6973284118cfebacaf",
    "signature": "0x1c174982702d2590ead9cfb988bd9096ea9c16d2fdb36178f45864157707d7e425f8bab173b919b719144a9f8a38e3aba6e3497355f36aded0c34beacf4a156d1c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}