{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3407",
    "entityType": "User",
    "nonce": "0xeed1a47f188327658a7abe94a93a43b67a3544d6a26f3ee639a948f0df28c7f4",
    "signature": "0xa1f11c87831284e3a871a1b2eac3469f6385c23a19fe995b05002e5e427b09b442f02e9058663f059b0ea825fe643ccf06803efd9f725dadabed6b03bdfb0a771b",
    "signer": "0x257c9f4A9563d6A4a2bF3be7Da1738e167fcF295",
    "userId": "301719964"
  }
}