{
  "manageEntity": {
    "action": "Save",
    "entityId": "316178",
    "entityType": "Track",
    "nonce": "1787835097165680208",
    "signature": "0x9862437170df31ccae35d36998e1ae85e759cea1a3a0f59cf2441d1941ee9a7e13c147b40dcc7346f6fd94327136177066f230e0f890b5a05f77f4e9ada93bfd1b",
    "signer": "0xd30fAF377491796757Ef4C1B0ccA8a407920e663",
    "userId": "451691735"
  }
}