{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "210452399",
    "entityType": "User",
    "nonce": "0xe52f55765f7ea7bac1fc7c7d6b4d8e7ea8636586d8a5ce24b552a243264078c4",
    "signature": "0x29c5b5a95c39c3be1ae8e580c60cd25d0ada3b946a0fc7dda2012a1a3028eb65273c0a5956fd155613199a0b36ff608b34dc05d9f49459ebbf25048e4fcd1b681b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}