{
  "manageEntity": {
    "action": "Save",
    "entityId": "165776",
    "entityType": "Track",
    "nonce": "0x06a755871ed92df80511e0eb8ca2e41fce5bf0cab6dd8d4472ce4806662c0aaf",
    "signature": "0x496e02a8bae35f20473d94563b617784c28c40d5c20a2af9068c827022642f5f7c6d14a7edc73630829bef76ffab5ebe397700182082fa8f7c1a19d9d1a2e6e71c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}