{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "388785",
    "entityType": "User",
    "nonce": "0x8ac245a569ebf7347b56721e2527f9768168fb5e84a454ea6fb83e069461e86f",
    "signature": "0xfb2573592500d2c683a9fe55a4a6bbce2d92ff6ce862d8afee2cb61f98994a2f7d2c759a4fa3a1337494e937d3d81efe97dee4e9347d4524fa7911fbcb700f2a1c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}