{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x4fab3cd5ab407dd30d32362bae620eb6f1e504477d338e4a37aad1d91f69e5c4",
    "signature": "0x4ef0998350d4ec62842df463e9d444feaec4e5ae99d36362bac7534f0b6de78d1ec38c9930b965660c7010a092d0b8a54ee034db0f26d894410b0a87393a83bd1b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}