{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "404",
    "entityType": "User",
    "nonce": "0x6f56f0ad9a3603b6cc5b0c903000283ccbb02880547519678da0a15b968becd5",
    "signature": "0xecb05e242cdbdc71daf14ddb5f4e2d075ab3f76e1c5aaa58bcc495ac47834b956735fe896a9608353e7cdb64e12e14c7a042c90beeaadcc16afee1433ffa2fa71b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}