{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x73f52478ead83c0433371faecdb91bfb270b39a32677e2f9fb640a003a27ef31",
    "signature": "0x657d9f892283e0796062805774eeb9fa9fadad156f0bf7010536f480d8eae74305425d2bf0072cbab59d958fc30e44a3cab74c298c69177126bf36d5098d992d1b",
    "signer": "0xb13Bf8eE2e414ceCab4388a4c55D3613A3b7329a",
    "userId": "778205771"
  }
}