{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0xa775df81fd8a1548e0a45c1f6544f87826518ac11252d7c4700c67bd5fb24b68",
    "signature": "0x972e87d164c7ca9e486aebfb5e946e3b6702396042a404fef9f9f48627bf3d9a2ac4c1a95f5323284b5d73bad4e67589584ff356eb5ccb50561b4ebe2105e3ab1b",
    "signer": "0xdd5D8856cc04830658A172827fCaC1FC99243EbE",
    "userId": "587492476"
  }
}