{
  "manageEntity": {
    "action": "Save",
    "entityId": "822800752",
    "entityType": "Track",
    "nonce": "0x206be1faf639428b2c71c59104d82b324cebd66be5ec49135ab4950eb261148b",
    "signature": "0xe3b15d37b7a83e7c28e92f5a4633dee3dfca10bdb476c8f323fd43cc2353acbc60b2b41e8fa0f290634a407f543b77491eeb24c4e4006263519d87bfda0531c51b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}