{
  "manageEntity": {
    "action": "Save",
    "entityId": "92591",
    "entityType": "Track",
    "nonce": "0x90d7194b0c6fadd7953b4a995eb7a676212c0c7e542cf5bca2da65be32af0cd8",
    "signature": "0x4315b5e4179e55c308ff4962e26b8fdca77caaea5a7bee0c74ad245b022ae09c085ad2100f868a97dc31ff324a69703064023597dc5c13c43d0d396ae7d7337f1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}