{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4589",
    "entityType": "User",
    "nonce": "0xd7666492749e4797c5c078fe026b1090d74f028ac757740909de3a7dc2b398e5",
    "signature": "0x282f9c3c2c7bf9742cf59e249607dc5b0c91aa07cb8e276aed9b20f857449e8f798173c13e25496ee6b3563d0cf40e763c0844656b4e78a7847c3c61449fbf531b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}