{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd0fff8aea60bc9588077ab12f1f7383710d67c4490436250fb12533b7149181f",
    "signature": "0xf4ed4f25924ff7676fe67766a7b721e02fbac78507ea87899f4adfcf013343b22c0340a01df7f3e20267e2e663f06d2904920bb837438e735543aba57d13e8d21c",
    "signer": "0xf8Ae2071A8e584a628FdCC76a8fD7c9F07Ac0090",
    "userId": "23998018"
  }
}