{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xef14332631823c9d104630283538deddfe18b1be42fe68e96d0101586aaf4e4f",
    "signature": "0xf4665442c5d1a863de4eb368b6f8f8f76bdfbba7bfe8d0fc419417f11eed825759f5d0dc32b0f54f183bf9bcfd9c919a9ee07ccda846c4cf9d1995a5b1ef40901b",
    "signer": "0xc878B4B950D5e7cbA81be80233b56D3a13e3c7eE",
    "userId": "61025846"
  }
}