{
  "manageEntity": {
    "action": "Save",
    "entityId": "1012079",
    "entityType": "Track",
    "nonce": "0xdd87447396d5f65da9838abed23057307d8d8df2e4f41986a2b3be7e4309c912",
    "signature": "0x31a8f1efe4aaaa7e211529c2947f82205eea83fa2914e7c9ab265e235e6f2b3950839d864d6e587b82835dfa3a9eb5b96ea8a40d6b2be542a3ec38a1991c73ea1b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}