{
  "manageEntity": {
    "action": "Save",
    "entityId": "13569565",
    "entityType": "Track",
    "nonce": "0x883d49adcd06db76aca795be539fc4d6a5b5d13f7f8cc2651474740faf858922",
    "signature": "0xfc3035735a68b9ba34434493e6a00d6c3ca555e514fb898190dbfbbc07fe40f14b5e164f640c2b33b4184f32a382b475214b2c6038ea8d3769c747f91b0c04801b",
    "signer": "0x796D60E9fE921C82Ef20f6329e27dD246392f542",
    "userId": "809803"
  }
}