{
  "manageEntity": {
    "action": "Save",
    "entityId": "103601186",
    "entityType": "Track",
    "nonce": "0xf666952be06948887a7abb51c646d9a9a73b26596871bb89b6baf509523dd1d1",
    "signature": "0x09079e296eadbfb91d6a0d02aaca5fa788c0a12c9bbf4892003f3c9cd97d1d8801b95865178f3a6373fa5cd453b73ecd46737d58438cd4dd3771ca4e1a00432f1c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}