{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x235e84518546d8e27a803616f6afe183c12283c3cffedc890caeb0941901cbfd",
    "signature": "0xcb26570d161993bdfd97c7b49691f91766d81e090dc89d1d90fbd410b3fd229314ee7b7df8b03e593959e0bbc438e74b28057c611ef333dd8dfe142e8394d9bc1b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}