{
  "manageEntity": {
    "action": "Save",
    "entityId": "106525",
    "entityType": "Track",
    "nonce": "0xab837b18bdfb2394ee4080e6889e1ed6fd3a3c2eaa8f6fdfbcdb924752792289",
    "signature": "0x07b2266cdfd7639556f82b979e1bc8b732b7bb4450a4762f8ec056c9fdb7e88f78766a0f390eeab234d96cfb97a5b21855dd3abbd61acd0661bb9925ef3de9ad1c",
    "signer": "0xed0624Ca9FC4Bb6FD8c2D99022b0Cb438051845b",
    "userId": "368644300"
  }
}