{
  "manageEntity": {
    "action": "Save",
    "entityId": "1091327263",
    "entityType": "Track",
    "nonce": "0x4dfd0b5540b3a0b5351f790ceb789264f5b996b28143b9f5cd5ad6dc824efbf6",
    "signature": "0xe7e101c47e3481554514ca6755148decb5002dcba8c957535e84cc3cd8633dfb1ddfcc9aee98393c3d2a9b32aab1e2793c2de22b409d2b9bfe645e2eb6daa3961c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}