{
  "manageEntity": {
    "action": "Update",
    "entityId": "681447296",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7f67aad2a8eb1853c42cdb70d888d4811a91a39440d054c10b898c0c403622b8",
    "signature": "0xe48ebdfd8a3b6080120767a400bb78b4d475b499e9881735df87e15fe84b600378cfe24a0e425b05f7f9a13f6e5c6356753df424d4d8a7f05df117b76e43ba311b",
    "signer": "0x31529A3Ee1E76583c6Ed2fd2f4e4152094786Ffc",
    "userId": "681447296"
  }
}