{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "223331",
    "entityType": "User",
    "nonce": "0x5cd876916233b11808b4edfe81bf78bc6ccd1e4a608171e333eae823a30e890f",
    "signature": "0xc97394ecbd81712bec75f3656ef6649ec7f722bfca3ebe52a7cb174f073f9b482515b9aead845cfda7ab3d336d08bb36fab5accd896b92bfdf87f3dd91f61d731b",
    "signer": "0x48ECe992edB7C739B36f37DDbE8Fe352996B5A56",
    "userId": "183063753"
  }
}