{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "620449233",
    "entityType": "User",
    "nonce": "0xd68a7fed2883413eb831eda25ff4e5fa7563baccc7759ff3f7a9196b11622e37",
    "signature": "0x9a7fc71233d8e1a309c74fbf28e6398165a11020750e3daf44edde66d02b8561702eda8a2cd33403a4948c4bbe0d8a2ef5b49269bca22d8a7272670a228cffd31c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}