{
  "manageEntity": {
    "action": "Update",
    "entityId": "840925301",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1d852964af3b0043f50b4bf51b5984783682d68655360ce14b4bc33b82f921da",
    "signature": "0x7d06f9c078b9cc5bec325a4110cb65ab062f4a661497984ee9fe59ea76a59eed5167d4312def1dee079b26c1db58e281d1f09c6bef430b3f21a4680a0e03e2671c",
    "signer": "0x8b3f5B8294936704dA58BaA61c1119eB8C4581CF",
    "userId": "840925301"
  }
}