{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "308072",
    "entityType": "User",
    "nonce": "0x8160c4fea68f81598259d12c4494a9ae2caf15c97d699f243bb39e4470997523",
    "signature": "0xb31077371c97d3c5af46bb2ec62505846232cd6b5463f321e4438d01f1238912214bf7e141a45fbbdd49727b1409bfc79b69160a556bf5c106e79f8d7c40696d1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}