{
  "manageEntity": {
    "action": "Save",
    "entityId": "1844641476",
    "entityType": "Track",
    "nonce": "0x6a7cb3a1b152cdd3ad8dae2056e68f9f094214f25eab8952a602c8b50cdf04c4",
    "signature": "0x209b2fe9cc3f92f4893664bf28f1428a5a20736e1aa7f6b4fab826003adf0b872ff2c02ffc34624e75ac016437c334b65820c0ea43301bbc6b10744e3b6ca8e11b",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}