{
  "manageEntity": {
    "action": "Save",
    "entityId": "2038058340",
    "entityType": "Track",
    "nonce": "0x1311bb4e794b6dd6e7cacd459b21681a0e727c03d65a691179622636f13431e0",
    "signature": "0xa4133ed9126dc432fed6f7722250e7ae97e8b6717a08feaebde2300e7c3da9dd2f42aafa9c5fafdb8d6d094bfcaf5373f14ee30a940320ef33019394cee27a921c",
    "signer": "0xa22176a11BF6703EFe39D488aA7cC06aa781C44A",
    "userId": "633924738"
  }
}