{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x74529e5ca58ba9d6ed5308d029ecbbf4c20c7266a31f56c129521f2e842a780f",
    "signature": "0x897e5ddb838a0d1efd621a7b8f65a546dc0d33700cc2f7ca07eefb42d57c3e6f55e9463825b1c374cf81842b91c0ebe0781b42881c8da608abf3d27c921982441b",
    "signer": "0x6a4B54Cd08C134CE1eB2e1508bFC7D100e2Bf6A2",
    "userId": "70502085"
  }
}