{
  "manageEntity": {
    "action": "Save",
    "entityId": "812278843",
    "entityType": "Track",
    "nonce": "0xe93842f0c564e935555bf2f72e09286a0b877769f50316a6a56b654c667c895b",
    "signature": "0x8630c5a569094874b883bf5cdfb26ac8f5ef2c6ae4b33f512c37e2ddef3f07ca190741664e188fc238a6035da78c684980aeecb2efb8bc9ac100f02a54b4c2e21b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}