{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x3beb6e14ba7058989464e1323f50a5f3354f641e51245452cfeaccffecba3d6a",
    "signature": "0x453bb8e62fed2cd37a2f26530e43bfad328c4a4b954c4f8b9bb4d38eb8efc566572f52d5e3a4f91d04a74bb9f89bee45b0b318bff8e6ed3289c822a783ab11911b",
    "signer": "0xAdbca03dBaC99da7bed023EBBE89568b33744Df8",
    "userId": "842968337"
  }
}