{
  "manageEntity": {
    "action": "Update",
    "entityId": "108308523",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x51878f3f3865472fe058f5eea27d74342fcf3b4d16b622460dcbd8dfad17e095",
    "signature": "0xefe94ff553977032915cca58f0f5c823578d7a1317cf9bdd679962aa574fd67c44bc953f8d4d53573f0a3ece7957569595a4bacb5da88734c554fc4ace3143771c",
    "signer": "0xe862752d5754CA4034035D0c731bA7De15D49Ff5",
    "userId": "108308523"
  }
}