{
  "manageEntity": {
    "action": "Save",
    "entityId": "1100527165",
    "entityType": "Track",
    "nonce": "0x185fec87748838aa894788c06a76211950ab319ed60dc36330428ab6fab4d5ea",
    "signature": "0x3a0d042d67ddc390fbc16b8aebce09c174922fe19263c84a22dc7a206427316f555cfdf08264ee6ec8f7d706df3643cae41025e91c633f5a5b839e9b8facc42e1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}