{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "219525",
    "entityType": "User",
    "nonce": "0x14c0ebd396f49b6338997453d20a7c1eabfa980f2d9d9d0a0c711f9d9fbd54e4",
    "signature": "0xd4c8adf1627211e8d62060a63b420e20fec066d53ef8af6d940c82643abf1d487f17a28ee6c63aeedf785b4def75f8df462ef86da6968c49d04092c2d7227f171c",
    "signer": "0xc5c542a604880bF9049870Ee92c9CA4594Ed3129",
    "userId": "277347377"
  }
}