{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "344158827",
    "entityType": "User",
    "nonce": "0x9ed461624212dbf18a59880ec8f3dca07e9ff4733dd0b4a245e08577633dc4f8",
    "signature": "0xe2a3cd06bd128b5596a9a1cc6bc78f4b471d1142f9c08715a65d2d0a17ca23e522bf8ec99e59b6a1ec1271126e2a1226d1c84710a97a471c0f2242324b78b4661b",
    "signer": "0x9765cbE8e26a2c6c4847C1B69ABeB0B5250EC254",
    "userId": "678556080"
  }
}