{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "716044",
    "entityType": "User",
    "nonce": "0xa73eca094548d97ddd10def75295f4abe21c37b12c268a6aaea01b1bcaf63d4c",
    "signature": "0xb889b1eaea62cad1c916c2c54ba92b8c31edbac24d043da924fb6c73937942d13efd0a01d19005d272c37719192c827074a85af3ff0527eb0a7668951cc04ab01c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}