{
  "manageEntity": {
    "action": "Update",
    "entityId": "789245703",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x271fd7b1e6679d6a019a4af039f400f4921a15427c1749890934e365cf8b5655",
    "signature": "0x2899a83645e123761cec83e3cacb5e34bfbe4929d03e6b33c6176cda3d2cb17633ae173723e3603fac78aa08f49de5c9618b9e82723ab4b5c75ad5493e302d531b",
    "signer": "0xD99A5A77c7F24A417BcE29efBBE3096997c07e29",
    "userId": "789245703"
  }
}