{
  "manageEntity": {
    "action": "Save",
    "entityId": "806977433",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8c18673b5e1f02977b89f344ff37acd32b4a7bc204649b0223fbb107a1efc6e3",
    "signature": "0x0db35190dad1efa00ced0818bcb066d2c102fe9ebf199b0dcb104e8b88aa6a3d602cf70d4c7e2ebf260f370913915b80b9a2fef9324292acecb502ca9279db6d1c",
    "signer": "0x0b901AE3Eb7b439095858D82Ff194CfeD0Fd3396",
    "userId": "167557"
  }
}