{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "52142",
    "entityType": "User",
    "nonce": "0x31200b83d98ba67c186291945f4d585d27cf8b60dd2994ede6d0f965754cfcc1",
    "signature": "0xf667602446260bab70622129d37e2aae973083a325148fdb47794b543ba2a3bf2620d90b5941ac26d9ea2434e52555e52b8b5e229f1fd0ea29e0de5d9a99be0f1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}