{
  "manageEntity": {
    "action": "Update",
    "entityId": "134193257",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7eec5acf846a689afe2e8cd93e962956ba9d180f746d2be79f16a7b882315e03",
    "signature": "0xf4da353cabdbdf4c57cad69dcdc2214b782804be73480905b534374fb335416b660b2b1092f7242eb6588a239acb923503bb5912102d6e8ff5e22c2f66158e451c",
    "signer": "0xea757ff4Da161Dd9F610Da35a96cEe6986ff8a80",
    "userId": "134193257"
  }
}