{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54292",
    "entityType": "User",
    "nonce": "0x4210866600f01310db4f3de60bb38d976e368fa34405dfc576d5e13cff5c0889",
    "signature": "0xfc7e1d0b722e6bb3331600d0f08e0f8ef86fe6608969e785be09d4a636ea170e144e16c4b4ea9539b709afe2ac146f9d8ad0a535879b3d9b9111dfb9529eea5e1b",
    "signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
    "userId": "386745392"
  }
}