{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54816",
    "entityType": "User",
    "nonce": "0xbb49d2d21417e6df981025e6b9e8e83821e2ec7c6339fa608e4b93b1d75af4cf",
    "signature": "0xb55843741756b759afc0f1b2a43ff55f1563e92ab516ab2a153c40fdcf1a9a5d4fef3dc260d41fb07c3f2df80ba9a38ae2f277b927f8a732c1780deb7e0c4b491b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}