{
  "manageEntity": {
    "action": "Save",
    "entityId": "1569968831",
    "entityType": "Track",
    "nonce": "0xecb2c175cd58a39cd9b446b657d848d8eb5f77541c1f0d1798c8accb7e482051",
    "signature": "0x8ffcf3db8cb5b8ffbe0a2cf68c23c7dd8e3f1c2c15d3c22921db09a9adbbffae667f2ae477befd7f01984836cddfb64fd22f615abd6f1f4ced8a67c2eeecf85e1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}