{
  "manageEntity": {
    "action": "Save",
    "entityId": "634161875",
    "entityType": "Track",
    "nonce": "0xf67fccb8352db3b9f8300c2a11121645d9720696ad33ac91b71f03bd48f5a6ab",
    "signature": "0x38601da792998922fc60b2337d51f136b1e9d18a73a5abc8b03595fbbae1ff024c63cd4e30a783e6ee3810346903dfc50ca3bf00dcf90451bc77a77b9e3544551c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}