{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "345811967",
    "entityType": "User",
    "nonce": "0xacd1419157fe7d8552c4cdb34395adbeea12fee20f1fc18f3e212e9a670849db",
    "signature": "0x2861444afb0466d06167090f32d6dd6418ca5cdd4260dc3d1135f59e7b5311cf3d924b4df07c08c13015e8fcefbb89799d2f6ac660e78431575c621f9611c62c1b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}