{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "641892598",
    "entityType": "User",
    "nonce": "0x4bed44c3b4ea59e535cc825f5f5f4da4677ddc9e89d06369c8fe0b84fc4a99b4",
    "signature": "0xcbd4558920e7034a98f8d92480fd2598cc38d856ba016e80bfd10499f511687b010cd8f809c7b131d5f754b10050e6181b161e2e8cbc787c00790180ad4100ff1b",
    "signer": "0x375963f281CEdF4D9D180496F80A256D574daBa2",
    "userId": "981824750"
  }
}