{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "308196323",
    "entityType": "User",
    "nonce": "0x8d9038b099641f84fceb49d0a510c5545a3fb48b36ec9acd6b08c21a699e88ed",
    "signature": "0x16ff7996db706e31fb79a55b92239abb3cf8fc0a63af4cf52a90664f59b3a87f2ac2988ca79d2f788a008bf0d55057d14a95f661f32d277417c9d67326f1de111b",
    "signer": "0x3256Bd2D0B1984E7df4FA525017aD9bA48470760",
    "userId": "51"
  }
}