{
  "manageEntity": {
    "action": "Save",
    "entityId": "178866174",
    "entityType": "Track",
    "nonce": "0x7e891c3b3225fd0e66778595464bb27dcc948a37c88f4e8220098f63a702873a",
    "signature": "0x15ba8821e9639deb29c8b934f5a1ac6b3abbc72134a172cea94b3c7aedcc7e25690eaf0b4b213614022ef0863ca2f7be4458292489754b896975a068622e782a1c",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}