{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "445098",
    "entityType": "User",
    "nonce": "0x31e52c8ed370465f9f31750e7233d852f156ee5b6654299a5ba9dc7e7f16560f",
    "signature": "0xff3768b5bfb1a33d043301eec2148480ce2d0bf96786af8bc116aa7343e50b2833ef8703db331bf741b6b2ff5c82344eeeac5855f78c653413e320bdad0318ee1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}