{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "442825",
    "entityType": "User",
    "nonce": "0x84757e449caf652c81e56946d3496c47000d657d1e8a38c0872dfc3f0d583921",
    "signature": "0x5c0a5eff5f7071da6788565d4bac9fbc75cf89f1b4a98be5b5dbfb7a5ce568b55536f052d1bdb07f950490479d2b046a5326fe00f3819bb59ae9f60143de91641b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}