{
  "manageEntity": {
    "action": "Update",
    "entityId": "199246851",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x92b2ec300d8321a49082a28b31c623a33c92d06a94986b2651c30301cf4d2f38",
    "signature": "0xdaa03702d225c270e153b7b5d968cf5b7213dd271732ff892e492c8bb891283548cb3c8dc2e050a2fac9b9a5f009ce11c9f6e1f3d299dad5c18d3b180c61e5d41b",
    "signer": "0x2291c47919F744CdC633849921a372Bd3E2a439a",
    "userId": "199246851"
  }
}