{
  "manageEntity": {
    "action": "Save",
    "entityId": "636171608",
    "entityType": "Track",
    "nonce": "0x54983fd70fc8a32b0dc5e64bfac399ab2faada7eb10457db235697f7690ffca6",
    "signature": "0x88668eb8b68547f0384fa889f8233b03e2afa72d4a81bde3b93d1d2da681b54a5b7fc25ae873139c7fafcc1fd74b0e2415e4c9de5cd0b398c63608a236a31d231b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}