{
  "manageEntity": {
    "action": "Save",
    "entityId": "2090223575",
    "entityType": "Track",
    "nonce": "0xeaad7d4adff07ef2a066964c87ebcc4e2f35fbddcd4a6930cae06c352dce161e",
    "signature": "0xb30c98b3781c74fc130c5136a5044f49abb84a67fc6d40ee12d5823816f4ecd50eec206f081bcaed913fec2e404c0502ed554007583483652fb585fd6491683f1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}