{
  "manageEntity": {
    "action": "Update",
    "entityId": "246472329",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf9f7f535f830fa2a9a7d4068d07b9d73d187834a81e6c8883837d18a43637644",
    "signature": "0x02edd2d0c2fc31b34306ad9eead7f0f1536aac017f5389c86590c1f67556b3316e6f0ada61e9279f00908b6ee5ffad43ae654e7a39e1dd42c165ba19d87b57f01c",
    "signer": "0x651c879abaFB508Dc7C0697bA02a6552f62e2b13",
    "userId": "246472329"
  }
}