{
  "manageEntity": {
    "action": "Save",
    "entityId": "2111142770",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6a2a47857f8af6c38c958d3737ac7a2ae2184040f8de4c90d939f6cd722e6c59",
    "signature": "0x5cbba7ad8e7213ebf6ccd3a3a5d1932a99a4cf6d0e99684971099ee13ac3827e79f9d8c6482cf31e83f7bef753867b1e43208f998d12540847426440e7706b0f1b",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}