{
  "manageEntity": {
    "action": "Update",
    "entityId": "557355303",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc61f710d3f8c000ba558dc19ded26b8a412a0d90b7bedfc8b59d1d5a345b16fd",
    "signature": "0x9f48bffd951d091747025755ad80e9f9f493700bec277260b11033ccc65fa6b576c2ce2a9e3e75ec10bb065657568c2174c917ffe694a9e070f8b63608854a391c",
    "signer": "0x041097A772bA172637e2c15FbD947167da160ef6",
    "userId": "557355303"
  }
}