{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "53823",
    "entityType": "User",
    "nonce": "0xd75a741bd086ac22a248bc88f66df02f707e15ff837ce9e66fd71e825c62a7a3",
    "signature": "0x5ec8ee9e5f276429527401a716c20b07a5950720cfb7a111f1b39fb262a0a76b61bd4a59c699216e8e2ce3f3a462e3ca1edcc6f8ceaf8a2c7453cfe8dcdffc201b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}