{
  "manageEntity": {
    "action": "Update",
    "entityId": "16072044",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6897400378f6890cd82e5ef467b82d9604dd41413e1fa6ac09bffe4585cfb845",
    "signature": "0x903f74598b16a8de563620604b3f12b20a962c1449d5cb2e7987400fcf494ece3a69691fd3889e41f8d42ce92a11ceb1b6ca868329b52a7b13f0216d34dd54651c",
    "signer": "0xA1BE68D87068fc57EaFAfa5aeafc455519Fa0A6f",
    "userId": "16072044"
  }
}