{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x7172f0a8e8ecdac7d7572042d18cc53f8cbb5b0f1922134aafce835cba726261",
    "signature": "0x2c1b6caacb6b131589f1c8517a29d87f6ee16e9d23442055a8c74a29206c8314638bdcccc8d0a178c31c5a0c114fa6c6e7e46d9d2d55b4f12e2c832299d54ca91b",
    "signer": "0x78d41F673077E9B3Fed7bDccB987ae15D22beDFE",
    "userId": "850956187"
  }
}