{
  "manageEntity": {
    "action": "Save",
    "entityId": "1454897877",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8e007054234019ab8c8fab158f57c943c06addc71949cfc7017f66b9eb803980",
    "signature": "0x79a290103b0c2d7c12d7636bdb7948e78661817d53c9792a3b6832e011bd5d2c7426b51e23e6e38668325cc45bbcfbca025c3c54c3598c0714f59f4aebae582c1c",
    "signer": "0x6AAB6EaEa3f7F15750b649C269b0391dcB19dEeb",
    "userId": "92019297"
  }
}