{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "173990",
    "entityType": "User",
    "nonce": "0x8f73f94d562c6a2712af5d6cc6ddc68db6335cdcddccf765749a97b302dd8170",
    "signature": "0x028e5352351eb8288b654a1af6dbd8ca5a23eddb0ff042f416173c0bc2544efb210bd2fbe5a2e38608025431856c996662560826b033307db9de98c107c7dfc21b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}