{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354074",
    "entityType": "User",
    "nonce": "0xd884a85c2a957f30b915f1747ebc360321377930febca5ef7e91f83022ca6aae",
    "signature": "0x4efba1d16ff7c0c65accd88730df1c81ed6ac067a7b64cea17b227d234e312b97c42b323ae384483267e5eafad966211d74847c2aff6062053c278dcc5793f561b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}