{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "648802251",
    "entityType": "User",
    "nonce": "0xbc8d82505fe14fcfaeff6570a2b2653aafbaa0ad4bc8f1985183a3fa1f841834",
    "signature": "0x13f56ab6c2ea26cfa38fb29adf5fdb59ba561666b0fb0b71ecb62a5040bbbb13286e17a6fad5d2f44179d96e2b290302e302d10be6a759177b9baa1b26aecb2d1b",
    "signer": "0x1EEEf459C8e361773166d5681a5066659BC751D5",
    "userId": "210033902"
  }
}