{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "643310",
    "entityType": "User",
    "nonce": "0x398970f830ff731bfaeb04a24afedc4a773b5c6b6d81a32272eb16899cb11b44",
    "signature": "0x2b0c2096620b9fe5dfc103043eed472938f07f5a3f06d62a0bd27b2dadde10dc5064759bcdba7c5b097f10091ef443e65798e6daa3eff04e13ec307ae0d155551c",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}