{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "153514",
    "entityType": "User",
    "nonce": "0x85f49375d7eb221b1c7bf8959976ddf3c46da7a47b2e013374b0faa1c902589d",
    "signature": "0xccdaf602e37e2b7736526fc61e58f876004e7e1f64b9e1ecb35fe982bbfec92539f86bb0db9eca679408c6d8f47bc3f59a1248ecee8ead349e82843fd8da97e11b",
    "signer": "0x375963f281CEdF4D9D180496F80A256D574daBa2",
    "userId": "981824750"
  }
}