{
  "manageEntity": {
    "action": "Save",
    "entityId": "931139627",
    "entityType": "Track",
    "nonce": "0x43b2f20549438dd6d55eb6e7045bf45e44a43660c0c01a8b429dff7d28e08f3e",
    "signature": "0x1511dad16dff3ce8ca26fc3a7163607eb16675456a8bafeb5cd46958e6b77d0e7aca0decc9bd9c4f937aad5cc8350a7c93ef94b631f016df478e354b78abeb161b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}