{
  "manageEntity": {
    "action": "Save",
    "entityId": "627983",
    "entityType": "Track",
    "nonce": "0x70a04e5c671333b49435d364971614b31e2b292bdb8f27b373a7825111fe2836",
    "signature": "0x4e48f1870c71997b8db2f7cabe636c7cbf94883a77ddf0d58738a8e9094568cb6e803bcbb941ab5d1bbba1de593af13a1a71145d94ac0c6d971b7a2de48e12fc1c",
    "signer": "0x8739aB96B52ccc56d0E5226Ff69659162d4269A9",
    "userId": "320952162"
  }
}