{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "389177",
    "entityType": "User",
    "nonce": "0xd590688923e9439fc2216a7406e7ca3b6151e2b011330bc81851411cc0d548d1",
    "signature": "0xd8533b2a8a39434cf6737c910f2e5fc09bdcb818c9bf4639000ba648a0ddff8649a91521a779bac8fb505f7642bc04324d23d060e11441685d8907e6da5e14af1b",
    "signer": "0x8aC82278ECCcB07F5CD48853c1759c104aD8D7f7",
    "userId": "100670519"
  }
}