{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "707937",
    "entityType": "User",
    "nonce": "0x228a80f29cc6308cfa4a7d669ec4dfa6f4fe52742bb666daf28570d52c47bd42",
    "signature": "0x1955adcb6c9c82b0f4d0364a6d83ec66a58b29b2e2593c06af9f0cba01629b2c1bc8950444d8b76a4ca3aa5b0cb74c29fcc595a567ad4e0358c4ada27dc4b5c61c",
    "signer": "0xa603e9487Ed7C3C62E8acb85f8f32acFf5d6349b",
    "userId": "278135553"
  }
}