{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x29313d27b28863a8109a24dd5c21b58d3b1cf85cb5dacae78ca5098e1401f189",
    "signature": "0x57c845460affd0fb0f5deb4aeb673968bdcdec1e56ab731edca219985cff48dc69d5dd17482e5f2cf5843f8d7506e054f26407b39eb82aaf65078b5fa2b644e21c",
    "signer": "0x7a75a4f6Db403e120768B73C5e7dA9BD6eF0306E",
    "userId": "547641018"
  }
}