{
  "manageEntity": {
    "action": "Save",
    "entityId": "1965719196",
    "entityType": "Track",
    "nonce": "0xa75a4655b6c77c89c41b6766624f7e87d9e60ae27f7131e820a6c907f366e2bf",
    "signature": "0x010f38c6d557ee7bdfdae0080440510b329762604dc8d1424cbaf55ecc5eed851940f9cfd5908e1889fdd709506136697725612776d8ca7a5ca3b201bb09bb6c1b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}