{
  "manageEntity": {
    "action": "Save",
    "entityId": "2056780896",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa92e160e4c6e1d31ade984602c915aecf6f074880efc1bc6ec5e4627f402fde4",
    "signature": "0x2cde9eed939b69e173ba9b525fb96c841e55757c1de288377e44277a131b1d3c125f53c530af7ef88dc204742c51cffcbce249356cc072105eaeabbc49e8208c1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}