{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "887242445",
    "entityType": "User",
    "nonce": "0xebf6c3c824319fffb0cdb42d66a45b615f474abaaad46aa2f3808b7d1d647c38",
    "signature": "0xb65414911e6a205d611914b2544d46b721ba63a1d5e26c0c72943e762e42404a2fc6ca4ca92e400e65cb1fed4955b9bf496c48157f5ff0db44abad4011abb99a1b",
    "signer": "0x647f7C07Bb90cCeC21Bbf4C1Ed89df3Bf5020eF5",
    "userId": "879984932"
  }
}