{
  "manageEntity": {
    "action": "Update",
    "entityId": "422383007",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2aa475edf742c2831bfc80bf5f8dd1f0b9a4ade63889a2d7194acb8417ea2ba1",
    "signature": "0x7d5b9acd980923b09942486c91f1a2ae90d9203b12560fe7a7a09a69f30dd22e3053297c9fc13c700fda5984dc234972d23499567028d1be7b5165f6d3afce251b",
    "signer": "0x4466e1a64e35Dbca375F17dc03485C9C5c71F49c",
    "userId": "422383007"
  }
}