{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "671739",
    "entityType": "User",
    "nonce": "0x850e4c8878e5a1edae371e48e168212dc87a443fb2ed4ef99a12127d5a178cdd",
    "signature": "0x22e9fd225451d95a469b5a9938b41131e897d789f68abc3d8c3532e40ea16ab76e101306eac27f4a8534d58cff038afdbdd67223234ba6f1155705c594d4b4ec1c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}