{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "213759",
    "entityType": "User",
    "nonce": "0x687623c3432bc7d0b2097de6b2579f85d513b988d4ea104a1cf11dd6f1ec13bf",
    "signature": "0xcdc57b9d5f8e1dd8905b92a379ab99709067ffc5354c195e225a0206db88989c2fe4ee5ccdf009154852a4d9e0654979475f71875ca1c96699dc6c0ddd6841071c",
    "signer": "0x9BaE2e1849D39772019b4AC3468e938a232f73ee",
    "userId": "948584098"
  }
}