{
  "manageEntity": {
    "action": "Save",
    "entityId": "1382102867",
    "entityType": "Track",
    "nonce": "0x5242f18fb3e748edf5e43e740b110d8c86924709af44ab347d795eab474d571b",
    "signature": "0x2df7b3f0a9f6a1a03ca768c5366fd42a488483bca49798985da2188e7561ff627e58cab818acdee4e8ed30e35319dd1da8b58fed333466ef559493a054c5426b1b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}