{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "449",
    "entityType": "User",
    "nonce": "0xa3d7f73b40197bd161afcc2f8982da171ab950be0a7c998019a6ba91fd65add8",
    "signature": "0x75d599762ee245d9783a51887b03da8c98fc8e4bb8ac34b1e77572742937f3a929056a10b9e4d08cd6a7188ddb2757df5145766bff910dec9c30f1589aa151111b",
    "signer": "0x5617e33979Af319eD3a9a6bFF820d69b7e8877a9",
    "userId": "171261"
  }
}