{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x727c089a63d1d1f252b846c43085af15d8e4e1524b6c360af18ce6472ab06086",
    "signature": "0xff88e07d812592d5d7ebd487781a97cc05f529b500f5f2c9cd67d9a9ba6ea67e78d5e6d0cf1e1a6db8a07eaac1c854ed1af7738e029925e7db62b6126773a00d1c",
    "signer": "0x1703A84efC0e1F551dBceb0F96C918Da0eDBaF5A",
    "userId": "498454280"
  }
}