{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "63300",
    "entityType": "User",
    "nonce": "0x1b77c6d7d6e6a4df9b3938d1d214339a0e15cfcee50dbb65891d9e60437fc6e0",
    "signature": "0x65c574abaf90eaccd9ef51f5334f3e52d06a1b0b7acada0f2867754b3cc3815c12620ad2ccbea850ec52c6d9a642c91d7ea4904c80e1b1d15615f62bebe28fad1c",
    "signer": "0x766Ba5816f1Cbcd9649d3b301b8F423CFF252fdb",
    "userId": "758745"
  }
}