{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "397473",
    "entityType": "User",
    "nonce": "0xce5fdb886aee0cff9a204a7b88819124724cc6eecd0782fac2772949c5d20db1",
    "signature": "0xa09a3e3a9433578832aa6247fe45e56df30b76fa9d921327d85e53c813e8058e6ca4d82b896fb305783ef5f9b5384d92b55b7af5ed2fc93a4516e7be797389411c",
    "signer": "0x4D8EDeF47b57f98c89BDFf851267B0327BE4cD05",
    "userId": "5307724"
  }
}