{
  "manageEntity": {
    "action": "Save",
    "entityId": "242418984",
    "entityType": "Track",
    "nonce": "0x9544c3f30966edfbbcca4afa002d616ceda3f349066b1e3889479353442bc934",
    "signature": "0x79349bcd0ddaf63587977af0aa438f66a16667bb8e3bee9b5b9aa5b6c27779bf30f28f82fd289cccd78ea81528420cfd1411c13e489e09dac9c83edbaead3b961c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}