{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x19ecb98faa629a044de1f056bc2b702658090657c863ffbdbe846127fff096d7",
    "signature": "0x132a32848d0837c3c2f3177df1d65ba197857e082ab1ed076284686b26e40f0e50c1c17484fc9caaa6802f1b442c2f034ffb9ab09682790e3d34c0cdb64ec8eb1b",
    "signer": "0x62f9a1f68399638EDEEe6267cdf3B701099302aa",
    "userId": "951345783"
  }
}