{
  "manageEntity": {
    "action": "Save",
    "entityId": "862292875",
    "entityType": "Track",
    "nonce": "0x058edbc12c15ca6e1298ce4c29e170e1f42e3b5135263c2b3097a06215099da5",
    "signature": "0x90b428f8064305bcb3f27cebcb26ea5dbc6f3b0080224e3e9073c3ef4093afb146c02301f887b8fd455d451b1e8a6c9d7c3feefc61e294825b6d780d34d02ec61b",
    "signer": "0xF08935327AeC6306C8d0eb92999567e5496848C9",
    "userId": "989073793"
  }
}