{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xbe38050c2d74cca2b3be2d21499bbe22b45b13dd3b98c5a6cb956c6099a196b3",
    "signature": "0xd798ff6ebf606517cab67ab1ff5537dcd35c85b47ebb23dc6bb04ce072bd48f97b97c8fa645dee8d2e5a6b764adf51fc04a38037ab385162c4c24e44b3e699d61c",
    "signer": "0x7Ff131D44721BcC4A48b496f684DCEA984Ee86B5",
    "userId": "274329356"
  }
}