{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1511688",
    "entityType": "User",
    "nonce": "0x02950570987c66a3f61b0bc2da1e873814185560d9149c16df064a83df312784",
    "signature": "0xb9d7d3696ccdc544acdb74d393d9dd658c3d6beef39fcbf637cc7f00cb0f322d3d6741af8e3c197f6846fdc75e8e54efdcb25da678b214b5afcb222b76bff61d1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}