{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "281227",
    "entityType": "User",
    "nonce": "0x68172f9b19ca3fdcd7eaf647eb8f401ff0f99896c69a1a88b4ec63fb5702cc6b",
    "signature": "0x065a6a68f71e606a2756512e00d193297295f0ac452204b5690a3f6821efef1640d2cabcce9ddfa7a91e8bed335805e6df21c13da3b3c43a6824d9089da37c9c1c",
    "signer": "0x66eB52D64EEC44241f036b2978F734CB3B38DdCD",
    "userId": "882321302"
  }
}