{
  "manageEntity": {
    "action": "Update",
    "entityId": "593682731",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierarxgtxodtka44rdqxt3dqtqlalxz4slln425eqo4jbsn4wu2o5ewq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":647434914}]}}}",
    "nonce": "0x718c76732d0d09792f15a300431fef8ef4f929bcde025ee426fb6c34fe99aef3",
    "signature": "0x0aa114dee7a502f2bb47709567ab7f6e608a823fd64ee1ea8714fe26c683506c4ced00b4d3025d8c2784f713e721d4947d0af11ddca3fe5e783f8f96f007f2a31b",
    "signer": "0x66d0Af4A6D17aee8eeb3f04953c1736d90B76F09",
    "userId": "593682731"
  }
}