{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb710a79afb0a44b829c083cf98543bfa85d4f31d360dac02025518c93fac1aac",
    "signature": "0xbd9d568ce3be4bfda09d56d52568d90157fd9e159068adbcaf1eab6a5294ad416435f903774aff439e67bd83d0a84be2e01669dfe91ebe894008c2db8ff3cf941c",
    "signer": "0xFD38001fBA4A5C9a6b9302C73A7F50f65B306dD1",
    "userId": "731857092"
  }
}