{
  "manageEntity": {
    "action": "Save",
    "entityId": "37356",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb2c58e09762c9b69db31858c71b4ad44044c79091314d09cd5c9c9b5fa3f091f",
    "signature": "0x4a24c734f8bf5b2a5d3fdeb65f36effdfed092c171c8f76161003ccaacaaef705da703a95e2e2cad6286c7f1d75b4ca46e99a426608a9682765b9e9dfe4165581c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}