{
  "manageEntity": {
    "action": "Save",
    "entityId": "1587018143",
    "entityType": "Track",
    "nonce": "0x29dd17ea377c91216229be5fbbcb05f04bbb9433f98d8b95b1ad28f68191e9a8",
    "signature": "0xe337c4fbd7ce0a44226ee86b468b6d047a9fd045252bc32064492b70f0ea115f0e0c5bdf895b4bba74b02cbc6ac5589674f7a39985e86eb91232ee58ae3f96cb1b",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}