{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "755516",
    "entityType": "User",
    "nonce": "0xf4dc284b51a73048424d745a26f6f8e80cbe18df5ed65118331181ac7534bdec",
    "signature": "0x4ba2c94c0947ce3121f2ba7daa4f869614c1a98bf614c1a687e00a08d5c683d60cbb8b6152084188583485cbc84c760c113f74ad34fd9b48b694b10512798f301b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}