{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc1430cb18010dcf3cd6ec779547e2fe0b68d5090d20d87ce7880e84a91b6f040",
    "signature": "0x1aae9fcb2ef4d12e80df116bfb7e793ae7d6232f814a7cfaf11ad039b325aa834e72ac3bfb432b36237fa6a592c3f16135604e18b32ff7b56f3ced7f73f4fde81b",
    "signer": "0xA8C47FEFe4dE428e82CEFa489161d1A4bbBa9519",
    "userId": "19820353"
  }
}