{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4ee70f30a921abb509c2e530c77e8869cd258d61e133de2f0d445c1b52672ed8",
    "signature": "0xa2a058164773454fe47248ca50f620cb9087653a6c410b63974d9eb1a6a05d667d4836d8abc17fe8da56876aa737a80a4355b273227132916aad2c38e6e5bbff1b",
    "signer": "0x914c1658bB5967D43E73304cD48EFa424776a6C8",
    "userId": "216111760"
  }
}