{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50672",
    "entityType": "User",
    "nonce": "0x7faf14f846d30f616f18d41e2bb379d2f2e00a264062d349178f777a2373efb9",
    "signature": "0x4768f32abc8d18982abf1e54ebd596cdc4380d9ff9ec1539808bf8b25c224245265d64c99d8aadcb5dddf33bd0bc5f3c7cbadde53e0572d984b471e59cd61f581c",
    "signer": "0x2298E32DA0e7c080878c6C1eAB02B255510f0Db9",
    "userId": "570472437"
  }
}