{
  "manageEntity": {
    "action": "Update",
    "entityId": "839038327",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1532f3ee3af72701c00568071d5075f067bd5b6b3e40a3ff81d981a63a455577",
    "signature": "0x597de8a810a9605dff7a89b587cb6fae55d80986561130d7f2dd3604ee31dae55d25d0179cd2b61f3278270cc484478580750fd04ebecac4caf76d0edce27e2b1b",
    "signer": "0xFD83a557B0e0CC32c3418e63a26d7162a0CAe4F7",
    "userId": "839038327"
  }
}