{
  "manageEntity": {
    "action": "Update",
    "entityId": "589496693",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc635abc83b2cc2d4f5548f35bb7c8db7ada3b4c5c4ad9193c5e07515c621808a",
    "signature": "0xef049affe2aa8207c5a520164dbd36cdab08e6ac94fd5be4048890fab29f719d14dbbd1c029f06d9b0fe69f6ad9d6a0bf469abe9b7e37da520e8c7622d17da6d1c",
    "signer": "0x21637BdEcb4C24975A16A1056EFcB5A1CFA48553",
    "userId": "589496693"
  }
}