{
  "manageEntity": {
    "action": "Update",
    "entityId": "12559986",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xffae888c327c7a5328365bf9052d60c9885688439846d4511a07198107eaed34",
    "signature": "0x0e240ac02c8b12752054850355a2d5ed269635da4514e104cede9a3f7a61b83b1b611846e86d54428514ed868364889eab74a54d59a2a43afb9b601f6ca39ba51c",
    "signer": "0x5dE1751F7A5263BB9C90975A86D56F0087019953",
    "userId": "12559986"
  }
}