{
  "manageEntity": {
    "action": "Save",
    "entityId": "98334",
    "entityType": "Track",
    "nonce": "0x1a1b393ec07cfec48981234192564ff53f227160cfda43b8cb79cb5f8a25326d",
    "signature": "0x83b598d0060d0bcf4290a87a6a59c2c6b3211c7c3231153a29e2fb55123f392915bce10a48de08f3874a35f169ffd289e200632af4da066b72921e1c6f8faabf1b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}