{
  "manageEntity": {
    "action": "Save",
    "entityId": "1083977629",
    "entityType": "Track",
    "nonce": "0xcc1e85376d8630d55b233836e006f2b4e8fc626d60f3566c15a8e4abb56b324f",
    "signature": "0x7e0e7270266f87fddcafec008ebff109bb72214cd14930b1f4cbb45a746a1443451ddf8b6b7ad571d5c2fc817b883733b99a6b52c2767e78ad325deb65159e8f1c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}