{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "169901003",
    "entityType": "User",
    "nonce": "0x67bced3120c96c4b73098822f69759b6b97f72d683b99d4f87ff54584a288270",
    "signature": "0xafa247b1f519688016ee0cabdb3b2d743794f75ad05825e7f1e269b2ff0a841c0ac271dee74e9706ba14ca5d5f8bfd1774b4e52935d0d864617379b8d30ebd081b",
    "signer": "0x4fdc03E53311BF6b1B8728dd0Ae0630bF74176f1",
    "userId": "162770660"
  }
}