{
  "manageEntity": {
    "action": "Update",
    "entityId": "75683930",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x40527fc1cd01a5bd7c60711f40ca68c49621cb595611fc904d87230af96d1b60",
    "signature": "0x9888ffca8e6cab2bc084fdf98963e6152574e57922810a28cf35c77f3d2779c32caaecfdf5651b88045239288803e1d94c03aa21943c2c2a4f6bb6c497a9ee6f1b",
    "signer": "0xe8BAaf9d67869BFe993951C60524b67BC331bac9",
    "userId": "75683930"
  }
}