{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5d9ebd7f30796d05da5f6b16f5871b338d117a503d50ad680fb944dc8dabd62a",
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    "signer": "0x3E588CfA93A040d26F77885462D1b62B2ffc130e",
    "userId": "781563204"
  }
}