{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4276d9e0ae4d7d5bb24ddab3801cc202157749c12b4b1327f9b8d7a466f1f5cb",
    "signature": "0x688f01106703d7e0f8080ea9752050506ee3bbacfdce566bbd55dba91800dd415069f7a5c1235c8ea50168b3794f7c2b27b8cc6ca92362bfa467cf1a656bc7551c",
    "signer": "0x57f37dA62FDB7b38d5117E84b763cDbc7085736e",
    "userId": "826489117"
  }
}