{
  "manageEntity": {
    "action": "Update",
    "entityId": "328056745",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3f461631a57548d096b01986db9389c19a2dd30a98500e4186eafb4281409cb9",
    "signature": "0xa8a399680bd33ed99313b44a07c5e0305954d45c209a9a2bbc652562b709948e77f91334ce642ffa5ee559d560aa5d1a54e732a2739f9ca3ef8517256c266bfb1c",
    "signer": "0x75d782C5a68f76DfA69c426479B6ad14383D035f",
    "userId": "328056745"
  }
}