{
  "manageEntity": {
    "action": "Update",
    "entityId": "877122711",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1f1fc92b458f07097d2707da6c437e81905bf0bd3075ac56bd9c490693b9a8b1",
    "signature": "0x87cf893b6c620dd9616d74d196bb4b84096ae1e7f8036e3b1a5161b7faca51f9443005d980d603adc82d890b6997a137f1aa50a55f4a48c1f929b62a919da73a1c",
    "signer": "0xE5EAe12918b936A8185A7Beb955cDc7d6E77CB4a",
    "userId": "877122711"
  }
}