{
  "manageEntity": {
    "action": "Save",
    "entityId": "1270122751",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa18ff6cac2f337be837bf9236b51bafa164df4c326d02da14992576c42ce7b10",
    "signature": "0x0dda6d44988d6a0689625b42f800785424218c4abb5ac5081c4edce8a629be1f74ab72dab5f3530d9f749951e7a70776039739848d37f8e0549afbf80850f59e1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}