{
  "manageEntity": {
    "action": "Save",
    "entityId": "1140682716",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2d132653164ef0920e001a29036eeb9752edd3586a23c192a8085b8f2d94a378",
    "signature": "0x8fa14a26bf0eca6b03c68f8f7437f90609025606ed97c3faddbf2f293349ebc551c45390e3ca173399a964c4c242eb726498e6cceb2c0e1d126d0990b4098f201b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}