{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400655332",
    "entityType": "User",
    "nonce": "0x05a8e2d401e418d7e8ad652f00d6879b2206f877ad259fe3969bc1965f828f69",
    "signature": "0x578a0ebff656b2137d372792777750b7feec8fbdcbaec769dc4ba5ae2d6ddf776a25c7caa44b0890ac2a9bca6677aee689f0876a9e2f46a8420b635b61e9d3a61b",
    "signer": "0x18b5D7Cc922Ecc37bdB131b61E14eF5240cE064d",
    "userId": "744672373"
  }
}