{
"manageEntity": {
"action": "Save",
"entityId": "4281",
"entityType": "Playlist",
"metadata": "{\"is_save_of_repost\":false}",
"nonce": "0xb9818085862c57ca1996035196b28fc026a7b3eeb492c943893596d990be5f6c",
"signature": "0x46c8e154bf8696c2d12574b33728ee9ebb6b13727ca6f7921f260e27f64c2a202f30c0542d434b4a163d7cff8302ab2ef66f68d96dfd16d66cf53a71687148301c",
"signer": "0x91926DabD91E209b3d497e488439a181c3bacF30",
"userId": "284020290"
}
}