{
  "manageEntity": {
    "action": "Save",
    "entityId": "2021940077",
    "entityType": "Track",
    "nonce": "0x7c62a23f9356942132250f08975f2cde920e58b27b006aed724f3326ddf992a5",
    "signature": "0xed9cc931e886b070bf7ef8bbb21361eb77c10a4f42479546d2c5fc3d95f4197371280e7142f9040c18b2e57a151c6ece50915e85b8c94ab2e8b2d4357ddef6611c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}