{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "154217",
    "entityType": "User",
    "nonce": "0xe57e5de321e12f5b8bb4dc557ba48e0da8c223b29452e9d92f9318be8acd0677",
    "signature": "0xda2cd64033242cc4e4a8635eb5c6a834eba82f0c2e5effa31aa08372716d54cd138dfab2400cca00e010d2d83ec65f7c6243ad738258d5eacd0df669bf29e5811c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}