{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe7358cc96d01bb7513765c1947d31aedf42f657786431998cbce4ec27ef7311f",
    "signature": "0xdba2874851efeb09fefd952dce6098c76142fd0f03e040a119ee03cfa29070344c5cb6ee17a13bfa28126981686eafa37e467c99d203b7817d234b525f4d484b1c",
    "signer": "0xfb510ACe913D43DcD76F9b16603AD9b8E1281515",
    "userId": "916893458"
  }
}