{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb9b2f648d0cdfc9173b267d29828495b6e610e91cdc5ab32f1206fc65a669618",
    "signature": "0x91f69d270e1689e737d9f692eb8ed9d56908ad11571cc6cde13e6dcd070990916ee95c57a26a3602a8ac80c973b135539d8f70b199365e6ab917a54d421d9fcd1b",
    "signer": "0x7EA6047F75aD2B1f2A9565f87e8340D70B773FF2",
    "userId": "987093110"
  }
}