{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2eb70d7692cb06d976d7ac751b9799a5baa22d7fbc60ab4f932c8af096a326da",
    "signature": "0x953d805d4385a25a068076c8f188dd3eddb4897792a3cf9002c41da8581422654f738e27e1504ccde81ce8b4a85b32481c3d2a9cca1b7a81e680a4ed74d09bf11c",
    "signer": "0xb94b5945e69EfdBfCFD70c33880719283cC5950a",
    "userId": "850401302"
  }
}