{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x755ab605edf9a100ca6ba7a8274ab50887dd149e71f271914c1b082eeef43189",
    "signature": "0x1adfc68014592bd0b598c15774fce35a58430d0394ec5f08f7221b6b43a031e267c36c1033569cf377f2bf8e54b0caf36261ef4fca761be714fe92c6310b8b5e1b",
    "signer": "0xde80fAAA7CD732faE04Ab28935d412e3dca22F6e",
    "userId": "672554339"
  }
}