{
  "manageEntity": {
    "action": "Save",
    "entityId": "1594103165",
    "entityType": "Track",
    "nonce": "0x13de0f16e85e278791eb80fbf34cb27c2e19ce78419ffd3182136989ae07ed00",
    "signature": "0xcf91ef8ddfc07de0522a84fb5410ff90d1453c032950db846b6916b4b8073f1a402098bd498f700185b8a901831cbb5e3df0fa1c0c3f37e1ff52c355a0468ed71c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}