{
  "manageEntity": {
    "action": "Update",
    "entityId": "328056745",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x045940f516fbf8740a513faf801f2945e65d68799b61058fefb16789d2e57430",
    "signature": "0x13d0664bfc35408170c95b013bf7e5dd9e6cb7e0bf6bda341170fc036c11bf6a3912dd39589a66cf26509e9c129f2dc4428a1565ff40bc0c62be31660674d9101b",
    "signer": "0x75d782C5a68f76DfA69c426479B6ad14383D035f",
    "userId": "328056745"
  }
}