{
  "manageEntity": {
    "action": "Update",
    "entityId": "138655938",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc26e7c9abb664af9138178b1dc19317fff9d511cdd60e399cce905bc930cb490",
    "signature": "0x352b007c3c3fabbb742168d823384b2d82631eaaef5f8bfcde9ad318aa13c71d6614d3377e753f3338df716bc78594e7cd8c832e31241735facae13dab8e5e0f1b",
    "signer": "0x87f8538D39d3B2C6ce4d4343De4b6Aa2d5e75676",
    "userId": "138655938"
  }
}