{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1500091",
    "entityType": "User",
    "nonce": "0xee307bff01ab0cc5dbd15e883cb5a1050356e6fae9aa8c8128a8f7f0db6d41b8",
    "signature": "0x9a55da743635d30eb77fcb209a9d2a5045898758d4c7db2877a3e489f2ce5ec518aab978e6aca4cfa7cc6b6bb32026f0902bd9d14f0f836e014591c7f23ba0af1c",
    "signer": "0x6B239e9B75f27b519de7Bad3a26a0b7d30e32D3f",
    "userId": "311257477"
  }
}