{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xc9bf73c30dd100633e6f5356c6226663adf27d5f3a48cf2ff0e8b3551fd2b6d8",
    "signature": "0xaac98cf4e8f4bdda409962d58fef7b8f5dde67d4e1b406603ed474544de0e0cf7665caf7173980d06935cc6fa3f202690b55e37415920e0322aaf76afd1b70061b",
    "signer": "0x6268f3F36E0fe8D3E139bC6d32d7539887721848",
    "userId": "418312750"
  }
}