{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "410921999",
    "entityType": "User",
    "nonce": "0x822d9e248e14fe1ac764a78631defafbc4fe65b046639fb6e49da391bf312b63",
    "signature": "0xb9856c10e51fe4584e0e5a803fc341acc2c786b542ecbc0c69173e8b5c14548c4502c25d6c88fd5194e54d23752fc24cc20abe86cbfefea4dd6c8552d5bf7d0d1b",
    "signer": "0x29b8B5C7C09b59f857735F11a41B2D03DFEc5052",
    "userId": "191493"
  }
}