{
  "manageEntity": {
    "action": "Update",
    "entityId": "983723412",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9c5582a0d948e3e4fd28d121af818cf924f815938c8a62a13b9e721293e4aab1",
    "signature": "0x12f3ba239463550796e6a4f122d5ee167ff0ff2bb9702d2c156c228a12d76f8a799c746e40f001794b733ad9839acf6abf1f4a8b982b19c0838221fedd9017991b",
    "signer": "0xE82A87c5DfF781811168fDC162206679144A79FA",
    "userId": "983723412"
  }
}