{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0xef70037ffc851ad726e7af247496b13640dbf03b5b44eae0387e3c99a5fcd4b5",
    "signature": "0x4ff66d5ee61cf79948e1b5a0ea367e81e4615eaa64002178011780bf3ac319fa3d7dc3548e40465336beed94acb50f37994a8fdadc3a162fd6d4e5ef8529d2611c",
    "signer": "0x809Db232a6131f46553BA571FB17bFA2cc58aeE9",
    "userId": "351386054"
  }
}