{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8a323a56b1dd8b165430b96456252b68c3d0250c5bb4732ad2ed247991364809",
    "signature": "0x4704c64fed55a9f2475928a23b0236044867fb500eabdbc1d6f1d28e607f1c0e67e57a34485060dcfe27954f941141439b564076a4339a9885acb929f4d2ab181b",
    "signer": "0xF049754866a5DD0b02f641717091c62055b9B0C2",
    "userId": "610012488"
  }
}