{
  "manageEntity": {
    "action": "Update",
    "entityId": "637504294",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf993445346c7ab167726f2207af1f7c100f035c68568273df139d9d10a6014ba",
    "signature": "0x64de4ce217820127c544c21725b7ef4815e216e36111af97ca57b7624c8086a7239024adad74eb95e08b56cd2b967596a85a749478b0deaaaf85425edb55688c1c",
    "signer": "0xfE68632977dFfBE9213D73b22c54a5A2DCFEaDCF",
    "userId": "637504294"
  }
}