{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0xa363325e159f113a29e41edd9e423a2c76031d669b7247e76fe61b105d06825d",
    "signature": "0xf9b4e289f6701b5c49186ecf5c134dbf7bac197bb05d68a26de15f347dedfc525b947aff19b87d411bfdec1bd059db616689aab23ebf91e25c2efe8d4e3debe41b",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}