{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfc18c1e31670367becb5e8734c5eeddd3792467f5123adb56f8fdb76f33385cd",
    "signature": "0xfd5d9cd67b4e0dfcd433c8aa8f27fb564bf630f541a0a60d81dea5f40468844a62c2f20fb2619679d09cbb2a157288826beb3d073d127dabc2ae6b24e821b4d11b",
    "signer": "0x7B611404A2832EbAB0D3EBc6E45f2F0c98380720",
    "userId": "307711795"
  }
}