{
  "manageEntity": {
    "action": "Update",
    "entityId": "554920508",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x32b8105f7ac82d7db6395e261191ee96c6c4deda398b248d7305e76ad53009f0",
    "signature": "0x8939dab9ed8164b2c0998746e71d6b54a1b3a6ef960dddccc66e595cf9fedf1a5fe043ab0b073d6ccf66d462b2ce305d89f5cf8dda8569b918414b2391781add1c",
    "signer": "0x989faEfE658E0b6dF1793197b0De4137Cb1aDD3b",
    "userId": "554920508"
  }
}