{
  "manageEntity": {
    "action": "Update",
    "entityId": "582264550",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb801a6606793016825b5e4e995fa540eac47be259a90551ddeadeebd579db890",
    "signature": "0x8556df4f53f3e9aac1a9f5bc8911e42c8b6c1caefd6f6aa27f473e1b7a167d8b27dd9796ace6b020812e64284197444fee5a5bc32a8e97bda6874152ecea97f71b",
    "signer": "0x3868fcB1804130A4521662cb9C4CBBB0E4c021aB",
    "userId": "582264550"
  }
}