{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18534721",
    "entityType": "User",
    "nonce": "0x04adcfc255f1e07fa2664a6cdf8c86a424bfbd6a14799155c5f6ed43444f8e24",
    "signature": "0xc543920693c56b8ad90a1289a3df9b51e61c8dfa64dc884e0d0217516879cd95289c66ce7c94ecd574ad7c7aa83e8e394d0e3053586b2abc8c5b9bb0ed8851781c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}