{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2dfa1f00291cefc8869d463bcecc9613d6a05d95b78ca82213035b93a2ae788c",
    "signature": "0x9fa9e57420fff967acd750f32978f68251ba776aa40ca2bdc4fc4cb2cb905a4b398a56abe39e2c4e13876de0b0a61e167b590050d137e2920f43536e9274416f1c",
    "signer": "0xcf3499C4b67B7A4aFaCc93A32c308B75d87Ca31B",
    "userId": "869385937"
  }
}